Hammond Power Solutions SG3A0300DK Sentinel-G 3-phase 300 kVA general purpose distribution transformer, 240V delta primary to 480Y/277V wye secondary. Aluminum windings with 150°C temperature rise and 220°C insulation system. Type 3R enclosure for outdoor use. DOE 2016, NRCAN 2019, and NMX 2021 compliant. CSA and UL listed.

Approval

CSA, UL

Availability

Custom sizes, ratings and styles available upon request

BIL

10kV BIL on all 3 phase DOE 2016 product

Certification

UL Listed, CSA Certified

Duty

General duty

Efficiency regulation

DOE 2016 (US), NRCAN 2019 (Canada), NMX 2021 (Mexico)

Enclosure dimensions

52in/1321mm(H), 37.5in/953mm(W), 34in/864mm(D)

Enclosure finish

ANSI 61 grey, UL50

Enclosure ground assembly

No

Enclosure IR window

No

Enclosure PN (NPL)

DH5-N3R

Enclosure type

Type 3R / IP24

Frequency

60 Hz (some 50 Hz)

Impedance (std)

3.5% - 7%

Insulation class

220°C

Insulation Class

Standard 150 deg C temperature rise and 220 deg C

Material

Copper and aluminum available

Nameplate

HPS standard

Net weight (NPL)

2000 lb / 908 kg, Typically Built To Order

Non-linear load (K-factor rating)

General Purpose

Phase

Three phase

Primary BIL

10kV

Primary connection

Delta

Primary FCAN (NPL)

1x5%

Primary FCBN (NPL)

1x5%

Primary termination (NPL)

Mounting pads

Primary voltage

240D

Rating

300 kVA

Ratings

15 to 333 kVA single phase and 15 to 1500 kVA three phase

Secondary BIL

10kV

Secondary connection

Wye-N

Secondary termination (NPL)

Mounting pads

Secondary voltage

480Y/277

Seismic compliance

IBC 2018 (Sds=2.0, z/h=0, lp=1.5)

Sentinel general purpose

3ph 300kVA 240V-480Y/277V 60Hz AL

Sound level

55 dBA (NEMA ST-20)

Standard kVA

300

Temperature rise

150°C

Vector configuration

YNd1 (-30°)